For those who are currently in the market for dual Opteron boards and are preferring products manufactured by Tyan, be sure to carefully pick power supplies with some research before purchase. We have been advised that certain Antec power supplies are having issues with the following motherboards from Tyan:

The issues that are affecting the above motherboards have to do with a power fluctuation on the 12V rail that seems to be occurring only with Antec True Power 2 EPS power supplies. The units do not appear to be delivering consistent power -- often dropping to as low as 11.3V on the 12V rail. While some power supply units pass quality control tests initially, they end up failing after extended use. Using non-Antec power supplies solves the issue and for now we can only recommend that you use this work around until an official statement from Antec can be given. Tyan motherboards however, have always enjoyed a strong reputation for rock-solid stability -- although you may be required to be picky about which components you attach to the board.

Most power supplies have become all but commodity items on the market in the recent years but there are still companies out there that produce top-quality grade products. With all the newest high drain components coming out, the time is approaching again for us to do a power supply roundup.

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This is not the first time I have read about Antec PSU's having compatability issues. A few years ago there was a similar story involving Antec. Maybe someone remembers it better than me and knows where the link is.

This is not the first time I have read about Antec PSU's having compatability issues. A few years ago there was a similar story involving Antec. Maybe someone remembers it better than me and knows where the link is.
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Yes, there is alot of threads about it at silentpcreview.com. I'm one of the unfortunate suckers with an Asus A8N-SLI Premium and an Antec Neo HE. Computer powers on, and shuts down after 20-30 seconds. Doesn't matter what I do. Idle CPU temps when this happends is 25C. Computer works perfectly with a $25 generic noname PSU. Reply